merge function

Merge a Spatial* object having attributes with a data.frame

Merge a Spatial object having a data.frame (i.e. merging of non-spatial attributes). methods

## S4 method for signature 'Spatial,data.frame'
merge(x, y, by = intersect(names(x), names(y)),
 by.x = by, by.y = by, all.x = TRUE, suffixes = c(".x",".y"),
 incomparables = NULL, duplicateGeoms = FALSE, ...)

Arguments

• x: object deriving from Spatial

• y: object of class data.frame, or any other class that can be coerced to a data.frame with as.data.frame

• by, by.x, by.y: specifications of the common columns. See 'Details' in (base) merge.

• all.x: logical; if TRUE, then the returned object will have all rows of x, even those that has no matching row in y. These rows will have NAs in those columns that are usually filled with values from y

• suffixes: character(2) specifying the suffixes to be used for making non-by names() unique.

• incomparables: values which cannot be matched. See match.

• duplicateGeoms: logical; if TRUE geometries in x are duplicated if there are multiple matches between records in x

  and y

• ...: arguments to be passed to or from methods.

Returns

a Spatial* object

Author(s)

Robert J. Hijmans

See Also

merge